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<FONT color="green">001</FONT>    /**<a name="line.1"></a>
<FONT color="green">002</FONT>     * This class represents a single factory providing a single RPC channel.<a name="line.2"></a>
<FONT color="green">003</FONT>     */<a name="line.3"></a>
<FONT color="green">004</FONT>    package org.hackystat.ui.sensordataviewer.client;<a name="line.4"></a>
<FONT color="green">005</FONT>    <a name="line.5"></a>
<FONT color="green">006</FONT>    import org.hackystat.ui.sensordataviewer.client.common.RPCRemoteService;<a name="line.6"></a>
<FONT color="green">007</FONT>    import org.hackystat.ui.sensordataviewer.client.common.RPCRemoteServiceAsync;<a name="line.7"></a>
<FONT color="green">008</FONT>    <a name="line.8"></a>
<FONT color="green">009</FONT>    import com.google.gwt.core.client.GWT;<a name="line.9"></a>
<FONT color="green">010</FONT>    import com.google.gwt.user.client.rpc.ServiceDefTarget;<a name="line.10"></a>
<FONT color="green">011</FONT>    <a name="line.11"></a>
<FONT color="green">012</FONT>    /**<a name="line.12"></a>
<FONT color="green">013</FONT>     * This class represents a single factory providing a single RPC channel.<a name="line.13"></a>
<FONT color="green">014</FONT>     * @author David J. Nickles<a name="line.14"></a>
<FONT color="green">015</FONT>     *<a name="line.15"></a>
<FONT color="green">016</FONT>     */<a name="line.16"></a>
<FONT color="green">017</FONT>    public class RPCServiceFactory {<a name="line.17"></a>
<FONT color="green">018</FONT>      <a name="line.18"></a>
<FONT color="green">019</FONT>      private static RPCServiceFactory singular;<a name="line.19"></a>
<FONT color="green">020</FONT>    <a name="line.20"></a>
<FONT color="green">021</FONT>      /** {@literal} SERVLET_PATH context path for servlet. */<a name="line.21"></a>
<FONT color="green">022</FONT>      private static final String SERVLET_PATH = "sensordataviewer";<a name="line.22"></a>
<FONT color="green">023</FONT>    <a name="line.23"></a>
<FONT color="green">024</FONT>      /* RPC procedure variables */<a name="line.24"></a>
<FONT color="green">025</FONT>      private String serviceURL;<a name="line.25"></a>
<FONT color="green">026</FONT>      private RPCRemoteServiceAsync service;<a name="line.26"></a>
<FONT color="green">027</FONT>      private ServiceDefTarget endpoint;<a name="line.27"></a>
<FONT color="green">028</FONT>    <a name="line.28"></a>
<FONT color="green">029</FONT>      /**<a name="line.29"></a>
<FONT color="green">030</FONT>       * This method instantiates the special object needed for the RPC call to the servlet.<a name="line.30"></a>
<FONT color="green">031</FONT>       */<a name="line.31"></a>
<FONT color="green">032</FONT>      private void initRPC() {<a name="line.32"></a>
<FONT color="green">033</FONT>        this.service = (RPCRemoteServiceAsync) GWT.create(RPCRemoteService.class);<a name="line.33"></a>
<FONT color="green">034</FONT>        this.endpoint = (ServiceDefTarget) this.service;<a name="line.34"></a>
<FONT color="green">035</FONT>        this.serviceURL = GWT.getModuleBaseURL() + SERVLET_PATH;<a name="line.35"></a>
<FONT color="green">036</FONT>        this.endpoint.setServiceEntryPoint(this.serviceURL);<a name="line.36"></a>
<FONT color="green">037</FONT>      }<a name="line.37"></a>
<FONT color="green">038</FONT>      <a name="line.38"></a>
<FONT color="green">039</FONT>      /**<a name="line.39"></a>
<FONT color="green">040</FONT>       * Construct all the Remote Procedure Call Services.<a name="line.40"></a>
<FONT color="green">041</FONT>       */<a name="line.41"></a>
<FONT color="green">042</FONT>      private RPCServiceFactory() {<a name="line.42"></a>
<FONT color="green">043</FONT>        initRPC();<a name="line.43"></a>
<FONT color="green">044</FONT>      }<a name="line.44"></a>
<FONT color="green">045</FONT>      <a name="line.45"></a>
<FONT color="green">046</FONT>      /**<a name="line.46"></a>
<FONT color="green">047</FONT>       * Get a reference to the single RPCServiceFactory.<a name="line.47"></a>
<FONT color="green">048</FONT>       * @return a singular reference to a RPCServiceFactory that this class maintains.<a name="line.48"></a>
<FONT color="green">049</FONT>       */<a name="line.49"></a>
<FONT color="green">050</FONT>      public static RPCServiceFactory getInstance() {<a name="line.50"></a>
<FONT color="green">051</FONT>        if (singular == null) {<a name="line.51"></a>
<FONT color="green">052</FONT>          return (singular = new RPCServiceFactory());<a name="line.52"></a>
<FONT color="green">053</FONT>        } <a name="line.53"></a>
<FONT color="green">054</FONT>        else {<a name="line.54"></a>
<FONT color="green">055</FONT>          return singular;<a name="line.55"></a>
<FONT color="green">056</FONT>        }<a name="line.56"></a>
<FONT color="green">057</FONT>      }<a name="line.57"></a>
<FONT color="green">058</FONT>      <a name="line.58"></a>
<FONT color="green">059</FONT>      /**<a name="line.59"></a>
<FONT color="green">060</FONT>       * Get a reference to the single RPC service.<a name="line.60"></a>
<FONT color="green">061</FONT>       * @return a singular reference to a RPCServiceFactory that this class maintains.<a name="line.61"></a>
<FONT color="green">062</FONT>       */<a name="line.62"></a>
<FONT color="green">063</FONT>      public RPCRemoteServiceAsync getService() {<a name="line.63"></a>
<FONT color="green">064</FONT>        return this.service;<a name="line.64"></a>
<FONT color="green">065</FONT>      }<a name="line.65"></a>
<FONT color="green">066</FONT>    }<a name="line.66"></a>




























































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